Biology 1308 Unit 3 Interactive

Alzheimer's disease is a disorder involving _______________.

• Cells in the brain

• Cells in the muscles

• Cells in the heart

Answer explanation

Alzheimer's disease results in the disposition of an amyloid protein around neuronal cells, the basic building blocks of the nervous system.

In Alzheimer's disease, amyloid plaques form, blocking _____________________.

• Enzyme action

• Cell death

• Cell communication

• Protein accumulation

Answer explanation

Correct. Neuronal cells communicate by sending signals from one cell surface to another. The accumulation of amyloid plaques inhibits the electrical and chemical signaling between neuronal cells. 

All cells are microscopic.

• True

• False

A virus is classified as alive becuase it reproduces by cell division.

• True

• False

Multicellular humans develop from divisions of a single intitial cell. 

• True

• False

Tags

NGSS.HS-LS1-2

NGSS.HS-LS1-4

Plants are not alive because they are unable to move around.

• True

• False

A cells called a neuron is the basic unit of function in the brain.

• True

• False

DNA chromosome organized into a compact structure by proteins called histones.

• Nucleolus

• Nuclear pore

• Nucleoplasm

• Chromatin

• Cell nucleus

Semifluid mixture of fluid, chromatin, and other macromolecules inside a nucleus.

• Nucleolus

• Nuclear pore

• Nucleoplasm

• Chromatin

• Cell nucleus

Regulated opening in the nuclear envelope for membrane transport.

• Nucleolus

• Nuclear pore

• Nucleoplasm

• Chromatin

• Cell nucleus